title: Adsorption of carbon dioxide by MIL-101(Cr): regeneration conditions and influence of flue gas contaminants.
abstract: MIL-101(Cr) has drawn much attention due to its high stability compared with other metal-organic frameworks. In this study, three trace flue gas contaminants (H2O, NO, SO2) were each added to a 10 vol% CO2/N2 feed flow and found to have a minimal impact on the adsorption capacity of CO2. In dynamic CO2 regeneration experiments, complete regeneration occurred in 10 min at 328 K for temperature swing adsorption-N2-stripping under a 50 cm(3)/min N2 flow and at 348 K for vacuum-temperature swing adsorption at 20 KPa. Almost 99% of the pre-regeneration adsorption capacity was preserved after 5 cycles of adsorption/desorption under a gas flow of 10 vol% CO2, 100 ppm SO2, 100 ppm NO, and 10% RH, respectively. Strong resistance to flue gas contaminants, mild recovery conditions, and excellent recycling efficiency make MIL-101(Cr) an attractive adsorbent support for CO2 capture.
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Liu
authors.forename: Liqi
authors.initials: L
authors.lastname: Ning
authors.forename: Shudong
authors.initials: S
authors.lastname: Zheng
authors.forename: Mengna
authors.initials: M
authors.lastname: Tao
authors.forename: Yao
authors.initials: Y
authors.lastname: Shi
authors.forename: Yi
authors.initials: Y
authors.lastname: He